That's what I was thinking... now I have several options:
-Used OEM which I think I can find for about 200$
-New aftermarket, I've been quoted 300$ in a muffler shop
-New aftermarket ''performance'' for about 300$ too (I've been told that the performance is a little noisy... )

what do you think would be the best option?

I don't want to buy a brand new OEM - a little too expensive - I already have to change the front struts and the front ball joints and it's goin to cost me around 1000... don't wanna spend too much money on this car, even if it's in excellent condition with low mileage (156 000km).